wanglongcn ltcms API Endpoint downloadfile downloadFile path traversal

A vulnerability was found in wanglongcn ltcms 1.0.20 and classified as critical. This issue affects the function downloadFile of the file /api/file/downloadfile of the component API Endpoint. The manipulation of the argument file leads to path traversal. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.